<template>
    <div>
      <!-- 面包屑导航区 --> 
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>     
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card >
            <el-row :gutter="20">
                <el-col :span="8">
                     <!-- 搜索添加区域 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable="" @clear="getUserList">  
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户 </el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userList" border stripe>
                  <el-table-column type="index"> </el-table-column>
                <el-table-column label="姓名" prop="username"> </el-table-column>
                <el-table-column label="邮箱" prop="email"> </el-table-column>
                <el-table-column label="电话" prop="mobile"> </el-table-column>
                <el-table-column label="角色" prop="role_name"> </el-table-column>
                <el-table-column label="状态" prop="mg_state"> 
                    <template slot-scope="scope">             
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作"> 
                    <template slot-scope="scope">
                        <!-- 通过作用域插槽接收到scope 对象，通过scope.row 拿到该行的数据信息 -->
                        <!-- 修改 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色 -->
                            <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                                 <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                            </el-tooltip>
                       
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
             <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
             </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->

        <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary"  @click="addUser">确 定</el-button>
        </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
        title="修改用户信息"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名" >
            <el-input v-model="editForm.username" disabled=""></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机号" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false" >取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色对话框 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
        <div>
            <p>当前的用户：{{userinfo.username}}</p>
            <p>当前的角色：{{userinfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="dialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
        </el-dialog>

    </div>
</template>

<script>
export default {
  data(){
      //验证邮箱的规则
      var checkEmail=(rule,value,cb)=>{
          //验证邮箱的正则表达式
         const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
         if(regEmail.test(value)){
         return cb()
         }
         cb(new Error('请输入合法的邮箱'))
      }
      //验证手机号码的规则
      var checkMobile=(rule,value,cb)=>{
          //验证手机号的正则
             const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
      }
      return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:2
            },
            userList:[],
            total:0,    
            //控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',

            },
            //添加表单的验证规则对象
            addFormRules:{
                    username:[
                    {required: true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名在3-10个字符之间',trigger:'blur'}
                ],
                    password:[
                    {required: true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'密码在6-15个字符之间',trigger:'blur'}
                ],
                    email:[
                    {required: true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                    mobile:[
                    {required: true,message:'请输入手机号',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //进行用户编辑时查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{
                    email:[
                    {required: true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                    ],
                    mobile:[
                    {required: true,message:'请输入手机号',trigger:'blur'},
                    {validator:checkMobile,trigger:'blur'}
                    ]
            },
            //控制分配角色对话框显示与隐藏
            setRoleDialogVisible:false,
            //需要被分配角色的用户信息
            userinfo:{},
            //所有角色的数据列表
            rolesList:[],
            //权限分配中已选中的角色id值
            selectedRoleId:''
        }
    },
  created(){
      this.getUserList()
  },
  methods:{
      async getUserList(){
          const {data:res}=await this.$http.get('users',{params:this.queryInfo})
          if(res.meta.status!==200) 
          {
              return this.$message.console.error('获取用户列表失败！');         
          }
          this.userList=res.data.users
          this.total=res.data.total

        },
        //监听pagesize改变的事件
        handleSizeChange(newSize){
           //console.log(newSize);
            this.queryInfo.pagesize=newSize
            this.getUserList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage){
            //console.log(newPage);
            this.queryInfo.pagenum=newPage
            this.getUserList()
        },
        //监听switch开关状态的改变
        async userStateChange(userinfo){
            const {data:res}=await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status!==200) {
                userinfo.mg_state=!userinfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }          
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async value=>{
                if(!value) return
                const {data:res}=await this.$http.post('users',this.addForm)
                if(res.meta.status!==201){
                    this.$message.error('添加用户失败！')
                }
                this.$message.success('添加用户成功！')
                this.addDialogVisible=false
                this.getUserList()
             } )
        },
        //展示编辑用户的的对话框
        async showEditDialog(id){
            const {data:res}=await this.$http.get('users/'+id)
            if(res.meta.status!==200){
                return this.$message.error('查询用户信息失败！')
            }
            this.editForm=res.data
            
            this.editDialogVisible=true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息的提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                //发起用户修改数据请求
                const {data:res}=await this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status!==200){
                    return this.$message.error('修改失败！')
                }
                //关闭对话框，刷新数据列表
                this.editDialogVisible=false
                this.getUserList()
                this.$message.success('更新成功！')
            })
        },
        //删除用户
        async removeUserById(id){
            //弹框提示
            const confirmResult=await this.$confirm(
                '此操作将永久删除该用户, 是否继续?', 
                '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }).catch(err=>{
                    return err
                })
                
            //如果用户确认删除则返回值为confirm
            //用户取消删除，则返回字符串为cancel
            if(confirmResult !=='confirm'){
                return this.$message.info('已经取消删除')
            }

            const {data:res}=await this.$http.delete('users/'+id)
            if(res.meta.status!==200){
                return this.$message.error('删除用户失败！')
            }
            this.$message.success('删除用户成功！')
            this.getUserList()
                
        },
        //展示分配角色的对话框
        async setRole(userinfo){
            this.userinfo=userinfo

            //在展示对话框之前获取所有角色列表
            const {data:res}=await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败！')
            }

            this.rolesList=res.data

            this.setRoleDialogVisible=true
        },
        //点击按钮，分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色！')
            }
            const {data:res}=await this.$http.put(`users/${this.userinfo.id}/role`,{
                rid:this.selectedRoleId
            })
            if(res.meta.status!==200){
                return this.$message.error('更新角色失败！')
            }
            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible=false
        },
        //分配角色对话框关闭，select选择器重置
        setRoleDialogClosed(){
            this.selectedRoleId=''
            this.userinfo={}
        }

  }

}
</script>


<style lang="less" scoped>

</style>